TITLE:
Numerical Modeling of the Time Evolution of Super-Small-Scale Irregularities in the Near-Earth Rarefied Plasma
AUTHORS:
Oleg V. Mingalev, Mikhail N. Melnik, Victor S. Mingalev
KEYWORDS:
Near-Earth Plasma, Super-Small-Scale Irregularities, Numerical Simulation
JOURNAL NAME:
International Journal of Geosciences,
Vol.6 No.1,
January
28,
2015
ABSTRACT: The time evolution of the
magnetic field aligned super-small-scale irregularities in the concentration of
charged particles, existing in the near-Earth rarefied plasma, is studied with
the help of the model simulation. A new version of the two-dimensional
mathematical model, developed earlier in the Polar Geophysical Institute, is utilized
to investigate the temporal history of the irregularity with circular cross
section, created initially in the near-Earth plasma. The utilized model is
based on a numerical solution of the Vlasov-Poisson system of equations, with
the Vlasov equations describing the distribution functions of charged particles
and the Poisson equation governing the self-consistent electric field. The
results of simulation indicate that the mobility of the positive ions ought to
influence essentially on the time evolution of the super-small-scale
irregularities in the concentration of charged particles, existing in the
near-Earth rarefied plasma.